33  * passed to amdgpu IRQ handler which is responsible for detecting source and
41  * For GPU interrupt sources that may be driven by another driver, IRQ domain
45 #include <linux/irq.h>
165 	spin_lock_irqsave(&adev->irq.lock, irqflags);  in amdgpu_irq_disable_all()
167 		if (!adev->irq.client[i].sources)  in amdgpu_irq_disable_all()
171 			struct amdgpu_irq_src *src = adev->irq.client[i].sources[j];  in amdgpu_irq_disable_all()
186 	spin_unlock_irqrestore(&adev->irq.lock, irqflags);  in amdgpu_irq_disable_all()
190  * amdgpu_irq_handler - IRQ handler
192  * @irq: IRQ number (unused)
195  * IRQ handler for amdgpu driver (all ASICs).
198  * result of handling the IRQ, as defined by &irqreturn_t
200 static irqreturn_t amdgpu_irq_handler(int irq, void *arg)  in amdgpu_irq_handler()  argument
206 	ret = amdgpu_ih_process(adev, &adev->irq.ih);  in amdgpu_irq_handler()
225 						  irq.ih1_work);  in amdgpu_irq_handle_ih1()
227 	amdgpu_ih_process(adev, &adev->irq.ih1);  in amdgpu_irq_handle_ih1()
240 						  irq.ih2_work);  in amdgpu_irq_handle_ih2()
242 	amdgpu_ih_process(adev, &adev->irq.ih2);  in amdgpu_irq_handle_ih2()
255 						  irq.ih_soft_work);  in amdgpu_irq_handle_ih_soft()
257 	amdgpu_ih_process(adev, &adev->irq.ih_soft);  in amdgpu_irq_handle_ih_soft()
309 	unsigned int irq, flags;  in amdgpu_irq_init()  local
312 	spin_lock_init(&adev->irq.lock);  in amdgpu_irq_init()
315 	adev->irq.msi_enabled = false;  in amdgpu_irq_init()
330 		adev->irq.msi_enabled = true;  in amdgpu_irq_init()
334 	INIT_WORK(&adev->irq.ih1_work, amdgpu_irq_handle_ih1);  in amdgpu_irq_init()
335 	INIT_WORK(&adev->irq.ih2_work, amdgpu_irq_handle_ih2);  in amdgpu_irq_init()
336 	INIT_WORK(&adev->irq.ih_soft_work, amdgpu_irq_handle_ih_soft);  in amdgpu_irq_init()
342 	irq = r;  in amdgpu_irq_init()
345 	r = request_irq(irq, amdgpu_irq_handler, IRQF_SHARED, adev_to_drm(adev)->driver->name,  in amdgpu_irq_init()
350 	adev->irq.installed = true;  in amdgpu_irq_init()
351 	adev->irq.irq = irq;  in amdgpu_irq_init()
354 	dev_dbg(adev->dev, "irq initialized.\n");  in amdgpu_irq_init()
358 	if (adev->irq.msi_enabled)  in amdgpu_irq_init()
361 	adev->irq.msi_enabled = false;  in amdgpu_irq_init()
367 	if (adev->irq.installed) {  in amdgpu_irq_fini_hw()
368 		free_irq(adev->irq.irq, adev_to_drm(adev));  in amdgpu_irq_fini_hw()
369 		adev->irq.installed = false;  in amdgpu_irq_fini_hw()
370 		if (adev->irq.msi_enabled)  in amdgpu_irq_fini_hw()
374 	amdgpu_ih_ring_fini(adev, &adev->irq.ih_soft);  in amdgpu_irq_fini_hw()
375 	amdgpu_ih_ring_fini(adev, &adev->irq.ih);  in amdgpu_irq_fini_hw()
376 	amdgpu_ih_ring_fini(adev, &adev->irq.ih1);  in amdgpu_irq_fini_hw()
377 	amdgpu_ih_ring_fini(adev, &adev->irq.ih2);  in amdgpu_irq_fini_hw()
394 		if (!adev->irq.client[i].sources)  in amdgpu_irq_fini_sw()
398 			struct amdgpu_irq_src *src = adev->irq.client[i].sources[j];  in amdgpu_irq_fini_sw()
406 		kfree(adev->irq.client[i].sources);  in amdgpu_irq_fini_sw()
407 		adev->irq.client[i].sources = NULL;  in amdgpu_irq_fini_sw()
412  * amdgpu_irq_add_id - register IRQ source
417  * @source: IRQ source pointer
419  * Registers IRQ source on a client.
437 	if (!adev->irq.client[client_id].sources) {  in amdgpu_irq_add_id()
438 		adev->irq.client[client_id].sources =  in amdgpu_irq_add_id()
441 		if (!adev->irq.client[client_id].sources)  in amdgpu_irq_add_id()
445 	if (adev->irq.client[client_id].sources[src_id] != NULL)  in amdgpu_irq_add_id()
458 	adev->irq.client[client_id].sources[src_id] = source;  in amdgpu_irq_add_id()
463  * amdgpu_irq_dispatch - dispatch IRQ to IP blocks
468  * Dispatches IRQ to IP blocks.
492 	trace_amdgpu_iv(ih - &adev->irq.ih, &entry);  in amdgpu_irq_dispatch()
505 		   adev->irq.virq[src_id]) {  in amdgpu_irq_dispatch()
506 		generic_handle_domain_irq(adev->irq.domain, src_id);  in amdgpu_irq_dispatch()
508 	} else if (!adev->irq.client[client_id].sources) {  in amdgpu_irq_dispatch()
513 	} else if ((src = adev->irq.client[client_id].sources[src_id])) {  in amdgpu_irq_dispatch()
549 	amdgpu_ih_ring_write(adev, &adev->irq.ih_soft, entry->iv_entry, num_dw);  in amdgpu_irq_delegate()
550 	schedule_work(&adev->irq.ih_soft_work);  in amdgpu_irq_delegate()
569 	spin_lock_irqsave(&adev->irq.lock, irqflags);  in amdgpu_irq_update()
580 	spin_unlock_irqrestore(&adev->irq.lock, irqflags);  in amdgpu_irq_update()
600 		if (!adev->irq.client[i].sources)  in amdgpu_irq_gpu_reset_resume_helper()
604 			struct amdgpu_irq_src *src = adev->irq.client[i].sources[j];  in amdgpu_irq_gpu_reset_resume_helper()
629 	if (!adev->irq.installed)  in amdgpu_irq_get()
663 	if (!adev->irq.installed)  in amdgpu_irq_put()
697 	if (!adev->irq.installed)  in amdgpu_irq_enabled()
709 /* XXX: Generic IRQ handling */
728  * amdgpu_irqdomain_map - create mapping between virtual and hardware IRQ numbers
730  * @d: amdgpu IRQ domain pointer (unused)
731  * @irq: virtual IRQ number
732  * @hwirq: hardware irq number
735  * IRQ.
741 				unsigned int irq, irq_hw_number_t hwirq)  in amdgpu_irqdomain_map()  argument
746 	irq_set_chip_and_handler(irq,  in amdgpu_irqdomain_map()
751 /* Implementation of methods for amdgpu IRQ domain */
757  * amdgpu_irq_add_domain - create a linear IRQ domain
761  * Creates an IRQ domain for GPU interrupt sources
769 	adev->irq.domain = irq_domain_create_linear(NULL, AMDGPU_MAX_IRQ_SRC_ID,  in amdgpu_irq_add_domain()
771 	if (!adev->irq.domain) {  in amdgpu_irq_add_domain()
772 		dev_err(adev->dev, "GPU irq add domain failed\n");  in amdgpu_irq_add_domain()
780  * amdgpu_irq_remove_domain - remove the IRQ domain
784  * Removes the IRQ domain for GPU interrupt sources
789 	if (adev->irq.domain) {  in amdgpu_irq_remove_domain()
790 		irq_domain_remove(adev->irq.domain);  in amdgpu_irq_remove_domain()
791 		adev->irq.domain = NULL;  in amdgpu_irq_remove_domain()
801  * Creates mapping between a domain IRQ (GPU IH src id) and a Linux IRQ
806  * Linux IRQ
810 	adev->irq.virq[src_id] = irq_create_mapping(adev->irq.domain, src_id);  in amdgpu_irq_create_mapping()
812 	return adev->irq.virq[src_id];  in amdgpu_irq_create_mapping()